History of Earth: Geological Overview

history of the earthIt is said that the earth is billions of years old, well for those that believe in the evolution theory.  No matter how old the earth really is, one thing is for sure, the history of the earth outdates all of us.  When you think about how the earth first began, one thing that people usually question is land formation.  Based on science, the earth is believed to have been formed over 4 billion years ago by accretion of a solar nebula.

In the beginning, much of the Earth was molten because of volcanism.  Once the Earth was able to cool, the outer layer formed the Earth’s crust as water started to appear in the atmosphere.  Soon after this, there was a collision between an object and Earth that formed the moon.  Then, the oceans were formed .  Over the next millions of years, the surface of the Earth began to reshape itself.  This is when the continents began to form and break apart from one another.

This process, according to science books around the world, took millions of years.  When you think about it, it doesn’t seem like something that could come together overnight, without anything less than divine intervention.  With the continents formed, they just seemed to float over the oceans that were created by water vapor in the air, along with ice that was brought in by comets in the atmosphere.

The continents would also collide together and form supercontinents.  The three supercontinents that we know of from the past include Rodinia, Pannotia and Pangaea.  The final supercontinent, Pangaea, actually broke apart nearly 200 million years ago.  This is how the current seven continents were formed.  If you take a close look at a current map of the world, you will see that the continents actually do fit nicely together, much like a puzzle.  With that in mind, it is easy to see that the supercontinent theory makes a whole lot of sense.

It is not often that people take a look at the history of the Earth and learn more about how the land was actually formed.  It seems like something that many people take for granted, but it really is an intricate process that took quite some time before the Earth was inhabitable.

Learning about the history of the Earth is very important for everyone.  The more you learn about it, the more it will fascinate you.  Geology is the study of the Earth, and it is an important class for everyone.  If you have never learned about geology, then it may be time for you to begin studying.  It is very fascinating, and it can help you to learn a lot more about how the Earth came to be.